import sys import os import shutil import socket if len(sys.argv) < 2: sys.exit('Usage: %s directory to output certificates' % sys.argv[0]) if not os.path.exists(sys.argv[1]): sys.exit('ERROR: Directory %s was not found!' % sys.argv[1]) os.chdir(os.path.dirname(os.path.abspath(__file__))) os.environ['HOSTNAME'] = socket.gethostname() os.system("""openssl genrsa -out ca.key 2048""") os.system("""openssl req \ -x509 \ -new \ -nodes \ -key ca.key \ -days 3650 \ -subj "/C=DE/O=open62541/CN=open62541.org" \ -out ca.crt""") os.system("""openssl req \ -new \ -newkey rsa:2048 \ -nodes \ -subj "/C=DE/O=open62541/CN=open62541Server@localhost" \ -config localhost.cnf \ -keyout localhost.key \ -out localhost.csr""") os.system("""openssl x509 -req \ -days 3650 \ -in localhost.csr \ -CA ca.crt \ -CAkey ca.key \ -CAcreateserial \ -out localhost.crt \ -extensions v3_ca \ -extfile localhost.cnf""") os.system("""openssl x509 -in localhost.crt -outform der -out localhost.der""") #we will need these files later os.remove("localhost.key") #we will need it later os.remove("localhost.crt") os.remove("localhost.csr") os.remove("ca.key") os.remove("ca.srl") shutil.move("localhost.der", sys.argv[1]) shutil.move("ca.crt", sys.argv[1])